silly silicone question

[amanda]

After a trip to the local hardware store, I am confused. I was trying to find a good silicone glue and could not find ANY that seemed to be what I needed. A clerk there explained that anything that reads "paintable" on the label is not really silicone.... which is what I had just run out of in the shop. (whoops!) So- could someone please suggest brands to me? Thanks!

[ArtLady]

Some people may disagree but in my mind 100% pure silicon is just that "100% pure silicon". This is what we use.

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Timberwoman
AL
I cut the mat, I pet the =^..^= cat.

[This message has been edited by ArtLady (edited November 21, 2000).]

[Bill Ross]

Should also say "glue or adhesive cement" on the label.
We have changed over to using museum earthquake adhesive for our light weight objects and holders for heavy objects.

Many of the items we mount have value and glue can cause an reaction with some natural materials.

Silicon glue does not hold objects well over the long haul--it dries out and allows the object to move.

[BUDDY]

BILL;
Please excuse what may sound like a dumb question,but there just aren't too many earthquakes in this area.
What did you mean by "musem earthquake adhesive"?Is this a brand name ,a type or what.Also is it superior because it holds better or because it is a more correct by conservation standards?
Please elaborate and tell us where it is available.
BUDDY

[This message has been edited by BUDDY (edited November 21, 2000).]

[This message has been edited by BUDDY (edited November 21, 2000).]

[Susan May]

Please show me information about Silicon glue drying out. I just spent too much time trying to find any proof of silicone drying, but all I found was information saying 100% silicone glue "Stays flexible and won't crack or shrink." About the only thing that I could find bad about the glue was, if you use the mildew preventive glue it "may" be toxic to your animals. (Sorry, they were talking about aquariums.) (I can see us gluing small animals in the frame and worrying about the toxins.) http://www.thegrumble.com/framer/ubbs/rolleyes.gif

Good O'l Sue

[Cookie]

Bill - Do you mean you use the earthquake adhesive to mount an item in the frame? I've only used it on the back of pictures to keep them straight and to stay on the wall. Never thought of using it for mounting things. What brand do you use? I've used "Quakehold" for the backs of pictures, but don't know if it's the museum quality.

[Jim Miller]

For objects that have no lasting value, it's probably OK. It holds things well, but silicone will cause permanent damage in two ways -- according to the experts:

1. It is difficult or impossible to remove from many surfaces.

2. It chemically offgasses for a long time. The gasses may react within the closed up frame package and cause deterioration, discoloration, or other permanent damage.

I haven't heard of silicone drying out, but conservators say it is absolutely forbidden in preservation framing.

"Quake Wax" or "Quake Hold" are brand names for a putty that is used to hold lightweight objects in place. It's very good for positioning, but it's best not to expect it to actually support much weight. Museums really do use it, and it is known to be harmless to most objects.

Restoration Hardware sells "Quake Hold" in small packages (75g) for about $6.50, or you can get it from any source of archival supplies.

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Jim Miller, CPFcm; GAFP Committee Member

[wcox]

I have used silicone glue for years. Never had a problem. If silicone glue is bad what kind of glue is better???

[artist]

Lewinter frame in Pittsburgh P.A. has a brand "tpi silicone adhesive" cat. # 1-290, that is an aerosol applicator. Greatest thing since sliced bread, No fuss, no muss, and it holds great. It won't hold an antique hammer,but fishing lures or arrowheads it works super.

[amanda]

OK now I am confused... sounds like maybe silicone glue is frowned upon(?) I called Larson's tech support hotline -a month or so ago about a record I was mounting, and they suggested using silicone glue on anything plastic because you can peel it off later with no damage. Any experiences with something like that??

thanx http://www.thegrumble.com/framer/ubbs/smile.gif

[osgood]

My opinion is that silicone is for construction work and making aquariums and has no place in a framing shop unless used for EASILY REPLACEABLE items.

Mechanical methods of mounting of objects is better than using glue.

[Jim Miller]

[QUOTE]Originally posted by wcox:
"I have used silicone glue for years. Never had a problem. If silicone glue is bad what kind of glue is better???"

If preservation is not an issue, and you like to use silicone, then use it. It doesn't matter for disposable items.

But if preservation is an issue, then *no* glue should come in contact with the item to be preserved. (Exception: fresh-cooked starch paste with no additives, for porous items that would not be harmed by it.) RULE ONE of presevation framing is "No change to the original condition." Any glue leaves residue, and therefore changes the original condition.

Personally, I prefer mechanical mounts such as strapping with thread, wire, or Mylar-D; or brass/steel rods covered with shrink tubing. We rarely use silicone inside a frame. We have seen it fail.

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Jim Miller, CPFcm; GAFP Committee Member